UnavailableException Class

Exception thrown when the coordinator knows there is not enough replica alive to perform a query with the requested consistency level.

Inheritance Hierarchy

SystemObject
  SystemException
    CassandraDriverException
      CassandraQueryValidationException
        CassandraQueryExecutionException
          CassandraUnavailableException

Namespace: Cassandra
Assembly: Cassandra (in Cassandra.dll) Version: 3.4.0

Syntax

public class UnavailableException : QueryExecutionException

The UnavailableException type exposes the following members.

Constructors

	Name	Description
	UnavailableException	Initializes a new instance of the UnavailableException class

Properties

	Name	Description
	AliveReplicas	Gets the number of replica that were known to be alive by the Cassandra coordinator node when it tried to execute the operation.
	Consistency	Gets the consistency level of the operation triggering this unavailable exception.
	RequiredReplicas	Gets the number of replica acknowledgements/responses required to perform the operation (with its required consistency level).